// -*- mode: C++; c-file-style: "cc-mode" -*-
//*************************************************************************
//
// Copyright 2010-2011 by Wilson Snyder. This program is free software; you can
// redistribute it and/or modify it under the terms of either the GNU
// Lesser General Public License Version 3 or the Perl Artistic License
// Version 2.0.
// SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
//
//*************************************************************************

#ifdef IS_VPI

#include "vpi_user.h"
#include <cstdlib>

#else

#include "Vt_vpi_param.h"
#include "svdpi.h"
#include "verilated.h"

#include "Vt_vpi_param__Dpi.h"

#include "verilated_vcd_c.h"
#include "verilated_vpi.h"

#endif

#include <cstdio>
#include <cstring>
#include <iostream>

#include "TestSimulator.h"
#include "TestVpi.h"

// __FILE__ is too long
#define FILENM "t_vpi_param.cpp"

#define DEBUG                                                                  \
  if (0)                                                                       \
  printf

unsigned int main_time = 0;

//======================================================================

#define CHECK_RESULT_VH(got, exp)                                              \
  if ((got) != (exp)) {                                                        \
    printf("%%Error: %s:%d: GOT = %p   EXP = %p\n", FILENM, __LINE__, (got),   \
           (exp));                                                             \
    return __LINE__;                                                           \
  }

#define CHECK_RESULT_NZ(got)                                                   \
  if (!(got)) {                                                                \
    printf("%%Error: %s:%d: GOT = NULL  EXP = !NULL\n", FILENM, __LINE__);     \
    return __LINE__;                                                           \
  }

// Use cout to avoid issues with %d/%lx etc
#define CHECK_RESULT(got, exp)                                                 \
  if ((got) != (exp)) {                                                        \
    std::cout << std::dec << "%Error: " << FILENM << ":" << __LINE__           \
              << ": GOT = " << (got) << "   EXP = " << (exp) << std::endl;     \
    return __LINE__;                                                           \
  }

#define CHECK_RESULT_HEX(got, exp)                                             \
  if ((got) != (exp)) {                                                        \
    std::cout << std::dec << "%Error: " << FILENM << ":" << __LINE__           \
              << std::hex << ": GOT = " << (got) << "   EXP = " << (exp)       \
              << std::endl;                                                    \
    return __LINE__;                                                           \
  }

#define CHECK_RESULT_CSTR(got, exp)                                            \
  if (strcmp((got), (exp))) {                                                  \
    printf("%%Error: %s:%d: GOT = '%s'   EXP = '%s'\n", FILENM, __LINE__,      \
           (got) ? (got) : "<null>", (exp) ? (exp) : "<null>");                \
    return __LINE__;                                                           \
  }

#define CHECK_RESULT_CSTR_STRIP(got, exp)                                      \
  CHECK_RESULT_CSTR(got + strspn(got, " "), exp)

int check_param_int(std::string name, PLI_INT32 format, int exp_value,
                    bool verbose) {
  int vpi_type;
  TestVpiHandle param_h;
  s_vpi_value value;
  value.format = format;
  value.value.integer = 0;
  s_vpi_error_info e;
  const char *p;

  vpi_printf((PLI_BYTE8 *)"Check parameter %s vpi ...\n", name.c_str());
  param_h = vpi_handle_by_name((PLI_BYTE8 *)TestSimulator::rooted(name.c_str()),
                               NULL);
  CHECK_RESULT_NZ(param_h);
  vpi_type = vpi_get(vpiType, param_h);
  CHECK_RESULT(vpi_type, vpiParameter);
  if (verbose) {
    vpi_printf((PLI_BYTE8 *)"  vpiType: %s (%d)\n",
               vpi_get_str(vpiType, param_h), vpi_type);
  }

  // attributes
  p = vpi_get_str(vpiName, param_h);
  CHECK_RESULT_CSTR(p, name.c_str());
  p = vpi_get_str(vpiFullName, param_h);
  CHECK_RESULT_CSTR(p, std::string("t." + name).c_str());
  p = vpi_get_str(vpiType, param_h);
  CHECK_RESULT_CSTR(p, "vpiParameter");
  vpi_type = vpi_get(vpiLocalParam, param_h);
  CHECK_RESULT_NZ(vpi_chk_error(&e));
  if (verbose && vpi_chk_error(&e)) {
    vpi_printf((PLI_BYTE8 *)"    vpi_chk_error: %s\n", e.message);
  }

  // values
  if (verbose)
    vpi_printf((PLI_BYTE8 *)"  Try writing value to %s ...\n", name.c_str());
  value.value.integer = exp_value;
  vpi_put_value(param_h, &value, NULL, vpiNoDelay);
  CHECK_RESULT_NZ(vpi_chk_error(&e));
  if (verbose && vpi_chk_error(&e)) {
    vpi_printf((PLI_BYTE8 *)"    vpi_chk_error: %s\n", e.message);
  }

  if (verbose)
    vpi_printf((PLI_BYTE8 *)"  Try reading value of %s ...\n", name.c_str());
  vpi_get_value(param_h, &value);
  CHECK_RESULT_NZ(!vpi_chk_error(&e));
  if (verbose && vpi_chk_error(&e)) {
    vpi_printf((PLI_BYTE8 *)"    vpi_chk_error: %s\n", e.message);
  }
  if (verbose) {
    vpi_printf((PLI_BYTE8 *)"    value of %s: %d\n", name.c_str(),
               value.value.integer);
  }
  CHECK_RESULT(value.value.integer, exp_value);

  return 0;
}

int check_param_str(std::string name, PLI_INT32 format, std::string exp_value,
                    bool verbose) {
  int vpi_type;
  TestVpiHandle param_h;
  s_vpi_value value;
  value.format = format;
  value.value.integer = 0;
  s_vpi_error_info e;
  const char *p;

  vpi_printf((PLI_BYTE8 *)"Check parameter %s vpi ...\n", name.c_str());
  param_h = vpi_handle_by_name((PLI_BYTE8 *)TestSimulator::rooted(name.c_str()),
                               NULL);
  CHECK_RESULT_NZ(param_h);
  vpi_type = vpi_get(vpiType, param_h);
  CHECK_RESULT(vpi_type, vpiParameter);
  if (verbose) {
    vpi_printf((PLI_BYTE8 *)"  vpiType: %s (%d)\n",
               vpi_get_str(vpiType, param_h), vpi_type);
  }

  // attributes
  p = vpi_get_str(vpiName, param_h);
  CHECK_RESULT_CSTR(p, name.c_str());
  p = vpi_get_str(vpiFullName, param_h);
  CHECK_RESULT_CSTR(p, std::string("t." + name).c_str());
  p = vpi_get_str(vpiType, param_h);
  CHECK_RESULT_CSTR(p, "vpiParameter");
  vpi_type = vpi_get(vpiLocalParam, param_h);
  CHECK_RESULT_NZ(vpi_chk_error(&e));
  if (verbose && vpi_chk_error(&e)) {
    vpi_printf((PLI_BYTE8 *)"    vpi_chk_error: %s\n", e.message);
  }

  // values
  if (verbose)
    vpi_printf((PLI_BYTE8 *)"  Try writing value to %s ...\n", name.c_str());
  value.value.str = (PLI_BYTE8 *)exp_value.c_str();
  vpi_put_value(param_h, &value, NULL, vpiNoDelay);
  CHECK_RESULT_NZ(vpi_chk_error(&e));
  if (verbose && vpi_chk_error(&e)) {
    vpi_printf((PLI_BYTE8 *)"    vpi_chk_error: %s\n", e.message);
  }

  if (verbose)
    vpi_printf((PLI_BYTE8 *)"  Try reading value of %s ...\n", name.c_str());
  vpi_get_value(param_h, &value);
  CHECK_RESULT_NZ(!vpi_chk_error(&e));
  if (verbose && vpi_chk_error(&e)) {
    vpi_printf((PLI_BYTE8 *)"    vpi_chk_error: %s\n", e.message);
  }
  if (verbose) {
    vpi_printf((PLI_BYTE8 *)"    value of %s: %s\n", name.c_str(),
               value.value.str);
  }
  CHECK_RESULT_CSTR(value.value.str, exp_value.c_str());

  return 0;
}

int _mon_check_param() {
  int status = 0;
#ifdef TEST_VERBOSE
  bool verbose = true;
#else
  bool verbose = false;
#endif

  status += check_param_int("WIDTH", vpiIntVal, 32, verbose);
  status += check_param_int("DEPTH", vpiIntVal, 16, verbose);
  status +=
      check_param_str("PARAM_LONG", vpiHexStrVal, "fedcba9876543210", verbose);
  status += check_param_str("PARAM_STR", vpiStringVal, "'some string value'",
                            verbose);
  return status;
}

extern "C" int mon_check() {
  // Callback from initial block in monitor
  if (int status = _mon_check_param())
    return status;
  return 0; // Ok
}

//======================================================================

#ifdef IS_VPI

static int mon_check_vpi() {
  TestVpiHandle href = vpi_handle(vpiSysTfCall, 0);
  s_vpi_value vpi_value;

  vpi_value.format = vpiIntVal;
  vpi_value.value.integer = mon_check();
  vpi_put_value(href, &vpi_value, NULL, vpiNoDelay);

  return 0;
}

static s_vpi_systf_data vpi_systf_data[] = {
    {vpiSysFunc, vpiIntFunc, (PLI_BYTE8 *)"$mon_check",
     (PLI_INT32(*)(PLI_BYTE8 *))mon_check_vpi, 0, 0, 0},
    0};

// cver entry
void vpi_compat_bootstrap(void) {
  p_vpi_systf_data systf_data_p;
  systf_data_p = &(vpi_systf_data[0]);
  while (systf_data_p->type != 0)
    vpi_register_systf(systf_data_p++);
}

// icarus entry
void (*vlog_startup_routines[])() = {vpi_compat_bootstrap, 0};

#else

double sc_time_stamp() { return main_time; }
int main(int argc, char **argv, char **env) {
  vluint64_t sim_time = 1100;
  Verilated::commandArgs(argc, argv);
  Verilated::debug(0);
  // we're going to be checking for these errors do don't crash out
  Verilated::fatalOnVpiError(0);

  VM_PREFIX *topp =
      new VM_PREFIX(""); // Note null name - we're flattening it out

#ifdef VERILATOR
#ifdef TEST_VERBOSE
  Verilated::scopesDump();
#endif
#endif

#if VM_TRACE
  Verilated::traceEverOn(true);
  VL_PRINTF("Enabling waves...\n");
  VerilatedVcdC *tfp = new VerilatedVcdC;
  topp->trace(tfp, 99);
  tfp->open(VL_STRINGIFY(TEST_OBJ_DIR) "/simx.vcd");
#endif

  topp->eval();
  topp->clk = 0;
  main_time += 10;

  while (vl_time_stamp64() < sim_time && !Verilated::gotFinish()) {
    main_time += 1;
    topp->eval();
    VerilatedVpi::callValueCbs();
    topp->clk = !topp->clk;
    // mon_do();
#if VM_TRACE
    if (tfp)
      tfp->dump(main_time);
#endif
  }
  if (!Verilated::gotFinish()) {
    vl_fatal(FILENM, __LINE__, "main", "%Error: Timeout; never got a $finish");
  }
  topp->final();

#if VM_TRACE
  if (tfp)
    tfp->close();
#endif

  VL_DO_DANGLING(delete topp, topp);
  return 0;
}

#endif
